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What fraction of a radioactive sample remains after three half - life?
It is 1/8 .
After three half-lives what fraction of a radioactive sample will remain?
Approx 1/8 will remain.
What fraction of an original sample of a radio isotope remains after 3 half-life periods?
One eighth remains.
What is solving problem in math?
sample of problem solving
People are polled based on percentages that are set to reflect the makeup of the overall group?
quota sample
What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
What fraction of a radioactive sample remains after three half - life?
It is 1/8 .
Why After three half-lives what fraction of a radioactive sample remains?
After three half-lives, only 1/8 (or 12.5%) of the original radioactive sample remains. This is because each half-life reduces the amount of radioactive material by half, so after three half-lives, you would have (1/2) * (1/2) * (1/2) = 1/8 of the original sample remaining.
What percentage of a radioactive sample remains after 5 half-lives?
After 5 half-lives, 3.125% (or 1/2^5) of a radioactive sample remains. Each half-life reduces the sample by half, so after 5 half-lives, there is only a small fraction of the original sample remaining.
What fraction of a sample remains after three half lives?
An eighth remains.
What fraction of a radioactive sample decays after three half lives?
If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.
. If the half-life of an unstable isotope is 10000 years and only 18 of the radioactive parent remains in a sample how old is the sample?
30,000
What fraction of a sample of N 16 remains undecayed after 43.2 seconds?
1.5% remains after 43.2 seconds.
After three half-lives what fraction of a radioactive sample will remain?
Approx 1/8 will remain.
What fraction of a radioactive sample remains after three half-lives?
Not sure what you mean by "had-lives". After 3 half lives, approx 1/8 would remain.
What fraction of an original sample of a radio isotope remains after 3 half-life periods?
One eighth remains.
What fraction of a radioactive sample remains after one half-life?
After one half-life, half of the radioactive sample remains. This means that the remaining fraction is 1/2 or 0.5 of the original sample.
